mpic++ -std=c++11 -I./lp_solve -I./lp_solve/bfp -I./lp_solve/bfp/bfp_LUSOL -I./lp_solve/bfp/bfp_LUSOL/LUSOL -I./lp_solve/colamd -I./lp_solve/shared demo.cpp ./lp_solve/lpsolve55/bin/ux64/liblpsolve55.a -o demo -ldl -lm
mpirun -np $1 ./demo
